*{
    padding:0;
    margin:0;
}
a,u{
    text-decoration: none;
}
ul li{
    list-style: none;
}
ol li{
    list-style: none;
}
i,em{
    font-style: normal;
}
clear-fix::after{
    content:'';
    width:100%;
    height:0;
    display:block;
    overflow:hidden;
    clear:both;
    visibility:hidden};